1. IAEA International Atomic Energy Agency International Nuclear Information System (INIS) OCR at INIS INIS Training Seminar 7-11 October 2013, Vienna, Austria Branko Krznarić (based on the presentation by Yves Reynaud) INIS Unit

2. IAEA Outline What is OCR? OCR Objectives Principles Techniques Software INIS Training Seminar 7-11 October 2013, Vienna, Austria 2

3. IAEA What is OCR? INIS Training Seminar 7-11 October 2013, Vienna, Austria 3 (source: pcmag.com)

4. IAEA Optical Character Recognition (OCR) OCR is the “conversion of scanned images of handwritten, typewritten or printed text into machine-encoded text.” [1] Make digitized images of printed documents searchable. Font encoding issues. INIS Training Seminar 7-11 October 2013, Vienna, Austria 4

5. IAEA OCR Objectives We can “find the needle in the haystack” OCR offers a basic search from an unstructured document. OCR adds an extra value to your image. OCR brings to life your digitized collection. INIS Training Seminar 7-11 October 2013, Vienna, Austria 5

6. IAEA OCR Techniques Pre-processing De-skew Despeckle Binarization (optional) Line removal Layout analysis (zoning) Post-processing (dictionary) INIS Training Seminar 7-11 October 2013, Vienna, Austria 6

7. IAEA INIS Training Seminar 7-11 October 2013, Vienna, Austria 7 Scanned vs. Vector Image

8. IAEA “Do not look at the trees (letters) try to see the forest (sentences)“ F0R 488UR1N6 7H3 L0N63V17Y 0F 1NF0RM4710N, P3RH4P8 7H3 M087 1MP0R74N7 R0L3 1N 7H3 0P3R4710N 0F 4 D16174L 4RCH1V3 18 M4N461N6 7H3 1D3N717Y, 1N736R17Y 4ND QU4L17Y 0F 7H3 4RCH1V38 1783LF 48 4 7RU873D 80URC3 0F 7H3 CUL7UR4L R3C0RD. INIS Training Seminar 7-11 October 2013, Vienna, Austria 8

9. IAEA Verdana Font FOR ASSURING THE LONGEVITY OF INFORMATION, PERHAPS THE MOST IMPORTANT ROLE IN THE OPERATION OF A DIGITAL ARCHIVE IS MANAGING THE IDENTITY, INTEGRITY AND QUALITY OF THE ARCHIVES ITSELF AS A TRUSTED SOURCE OF THE CULTURAL RECORD. INIS Training Seminar 7-11 October 2013, Vienna, Austria 9

10. IAEA Brush Script MT (Windows Font) FOR ASSURING THE LONGEVITY OF INFORMATION, PERHAPS THE MOST IMPORTANT ROLE IN THE OPERATION OF A DIGITAL ARCHIVE IS MANAGING THE IDENTITY, INTEGRITY AND QUALITY OF THE ARCHIVES ITSELF AS A TRUSTED SOURCE OF THE CULTURAL RECORD. INIS Training Seminar 7-11 October 2013, Vienna, Austria 10

11. IAEA PCs ≠ Humans OCR compares patterns and selects the closest match. It can be forced to a specific context, but requires customization. People adapt to circumstances and can circumvent misspellings if context is clear. INIS Training Seminar 7-11 October 2013, Vienna, Austria 11

12. IAEA True or false Usually, printed text is adequately sampled if each line is at least two pixels in thickness: INIS Training Seminar 7-11 October 2013, Vienna, Austria 12

13. IAEA Zoom in INIS Training Seminar 7-11 October 2013, Vienna, Austria 13

14. IAEA Zoom in INIS Training Seminar 7-11 October 2013, Vienna, Austria 14

15. IAEA Results from OCR It is in this context that I… … and an additional protocol on the basis… INIS Training Seminar 7-11 October 2013, Vienna, Austria 15

16. IAEA Chinese Raster Image (scanned) INIS Training Seminar 7-11 October 2013, Vienna, Austria 16

17. IAEA Chinese Vector Image (OCR) 滤器 INIS Training Seminar 7-11 October 2013, Vienna, Austria 17

18. IAEA Arabic Raster Image (scanned) INIS Training Seminar 7-11 October 2013, Vienna, Austria 18

19. IAEA Arabic Vector Image (OCR) هذ ا وشملت INIS Training Seminar 7-11 October 2013, Vienna, Austria 19

20. IAEA Japanese Raster Image (scanned) INIS Training Seminar 7-11 October 2013, Vienna, Austria 20

21. IAEA Japanese Vector Image (OCR) INIS Training Seminar 7-11 October 2013, Vienna, Austria 21

22. IAEA Font Encoding INIS Training Seminar 7-11 October 2013, Vienna, Austria 22

23. IAEA Font Encoding (cont.) INIS Training Seminar 7-11 October 2013, Vienna, Austria 23

24. IAEA OCR Software Abbyy FineReader (multilingual OCR) Adobe Acrobat InftyReader INIS Training Seminar 7-11 October 2013, Vienna, Austria 24

25. IAEA Abbyy FineReader (interface) INIS Training Seminar 7-11 October 2013, Vienna, Austria 25

26. IAEA InftyReader - an OCR System for Math Documents INIS Training Seminar 7-11 October 2013, Vienna, Austria 26

27. IAEA Reference [1] “Optical character recognition” http://en.wikipedia.org/wiki/Optical_character_r ecognition. Retrieved 2013-09-23. http://en.wikipedia.org/wiki/Optical_character_r ecognition INIS Training Seminar 7-11 October 2013, Vienna, Austria 27

28. IAEA Thank you! INIS Training Seminar 7-11 October 2013, Vienna, Austria 28